23 Extending GDB

GDB provides several mechanisms for extension.
GDB also provides the ability to automatically load
extensions when it reads a file for debugging. This allows the
user to automatically customize GDB for the program
being debugged.

To facilitate the use of extension languages, GDB is capable
of evaluating the contents of a file. When doing so, GDB
can recognize which extension language is being used by looking at
the filename extension. Files with an unrecognized filename extension
are always treated as a GDB Command Files.
See Command files.

You can control how GDB evaluates these files with the following
setting:

set script-extension off

All scripts are always evaluated as GDB Command Files.

set script-extension soft

The debugger determines the scripting language based on filename
extension. If this scripting language is supported, GDB
evaluates the script using that language. Otherwise, it evaluates
the file as a GDB Command File.

set script-extension strict

The debugger determines the scripting language based on filename
extension, and evaluates the script using that language. If the
language is not supported, then the evaluation fails.